Photos: Country's Hottest Stars Arrive at the Academy of Country Music Awards!

The Las Vegas lights got a little brighter tonight with the stars of country music shining on the red carpet at the 46th annual Academy of Country Music Awards. Nominee and performer Carrie Underwood arrived in a floor length purple gown while Nicole Kidman chose a sexy black dress to escort Keith Urban. Taylor Swift took a break from touring to get in on the action and Julianne Hough made the trip to Sin City with her boyfriend Ryan Seacrest. Click through to see all the beautiful photos of the red carpet arrivals!